Quote:
Originally Posted by HPIA4v2
No expert but this is the funny thing that to me is illogical:
consensus:
we know that sludge/particulate in high mileage car if disturbed by changing the trans-fluid can clog the passage ways in the valve body, so why is it OK to have the same fluid (with sludge/particulates swimming in it) to be kept until trans fail.
Wouldn't it be better if we change the fluid more often to avoid sludge/particulate to develop?
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Transmission fluid has a high concentration of detergents in it. And the sludge isn't in the fluid, it is deposited, either in the pan or the filter. When you put in new fluid, you add fresh detergents, which clean out the passages, and move the sludge that was sitting there not hurting anything. That is the concern of those in the "don't change the fluid" club.
Changing the fluid more often doesn't avoid the particulates developing, they are primarily friction materials from the clutches that accumulate in any case. Changing the fluid simply provides more of an opportunity to move them around. If you change the fluid very frequently, you will keep on top of it. Or you can not change the fluid, and just let them sit there, it is the same difference.
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